Pulse Width Modulated to Pneumatic Output (Closed Loop)

Transcription

1 Pulse Width Modulated to Peumatic Output (Closed Loop) Dual ad Sigle Valve, Stadard ad Fail Safe FEATURES Accepts cotact closure, trasistor, or triac iputs Field Selectable Iput Pulse Rages, plus Phase Cut ad 0-10 secod widow PWM Field adjustable mi/max pressure output Adjustable Maual Override Aodized alumium maifold with gauge port, blue maifold for fail safe (FS) model Closed loop cotrol, maitais last commaded brach pressure LED Status idicator for power Brach pressure feedback sigal APPLICATIONS VAV Damper Motor Cotrol Compressor Stagig Ay Peumatic Actuator Cotrol DESCRIPTION The PWP*.2 coverts a pulse, phase cut, or digital PWM sigal ito a proportioal peumatic sigal ragig from 0-15 psig. The peumatic output is proportioal to the sigal iput. The PWP*.2 has a adjustable maual override potetiometer to INCREASE or DE- CREASE the peumatic output ad a LED for power ad sigal status idicatio. A ulit LED idicates o power to the PWP*.2, slow blik idicates power but o sigal detected, ad fast blik idicates a sigal beig received. Stadard output is 15 psig (up to 20 with special calibratio) ad has 255 steps of resolutio. The PWPO.2 is a sigle valve versio that has o restrictor ad does ot bleed or exhaust air. Its operatio depeds o its brach lie cosumig betwee 14 ad 73 scim. The PWP1.2,5.2, ad 7.2 are bleed types, with brach exhaust respose times determied by orifice size ad pressure differetials. The PWP2.2 ad PWP2.2FS icorporate two valves ad are ot costat bleed iterfaces. Their brach exhaust flow ad respose time are similar to its load rate. The PWP*.2 maitais the last commaded peumatic pressure by SPECIFICATIONS ELECTRICAL REQUIREMENTS POWER SUPPLY Supply Voltage 24 VDC (+/- 10%) or 24 VAC (22 to 28 volts at termials) Supply Curret 160 ma maximum o stadard model, 200 ma maximum o FS (fail safe) model INPUT Pulse Source Relay cotact closure, triac, or trasistor (solid state relay) Pulse Trigger Level 9 to 24 VAC or VDC Off Time Betwee Pulses 10 millisecods miimum Pulse Duratio/Resolutio Selectable rages: Versio #1 I secods of relay cotact closure, triac or trasistor (solid state relay), 255 steps of resolutio..1 to 10 sec i 0.1 sec icremets 0.02 to 5 sec i 0.02 sec icremets 0. 1 to 25 sec i 0. 1 sec icremets 0.59 to 2.93 sec i 0.01 sec icremets Versio #2.023 to 6 sec 0 to 10 secod Duty Cycle Pulse, measured withi a 10 secod widow. Versio #3 0 to 20V Staefa TM Phase Cut

2 Pulse Width Modulated to Peumatic Output (Closed Loop) Dual ad Sigle Valve, Stadard ad Fail Safe SPECIFICATIONS FEEDBACK OUTPUT Feedback Sigal Rage 0-5 VDC = Output Spa (psig) MECHANICAL REQUIREMENTS AIR SUPPLY Supply Pressure Maximum 30 psig, mimimum 25 psig Air Cosumptio See chart uder Orderig Iformatio Output Pressure Rage 0-15 psig or specify special calibratio up to 20 psig Air Flow Supply 20 psig (138 kpa) mai/15 psig (103 kpa) out, 750 scim. Brach Lie requires 2 cubic iches (miimum). Filterig Furished with itegral-i-barb micro filter (Part # PIN1004) Optioal stadard barb (PNO02) with exteral 5 micro i-lie filter (PN021) CONNECTIONS Wire Size Up to two 18 AWG wires Termial Type 451, Captive screw with cage clamp i ickel plated copper alloy Peumatic Fittig Removable brass barbed fittigs for Mai ad Brach tubig mouted i machied alumium maifold with black aodized fiish (blue aodized maifold for FS model). Supplied w/plugged 1/8-27-FNPT gauge port. Guage istalled at additioal cost ature of its closed loop electroic desig, regardless of brach lie leaks. If power fails to the PWP2.2, brach lie pressure remais costat if the brach lie does ot leak air. FAIL-SAFE: The exhaust valve allows exhaust of brach air o PWP2.2FS (fail-safe) N.O. power failure, ad the PWP1, 5, or 7.2 will cotiue to bleed through the orifice util brach pressure is zero psig. Maifold color is blue. The output will ot wrap aroud if the pulse legth exceeds the maximum of the rage selected. The PWP*.2 has a brach lie feedback sigal of 0-5 VDC, which the cotroller ca use to moitor the brach lie pressure. The iput ca be a relay cotact closure, trasistor, triac, phase cut, or 0-10 secod Duty Cycle Pulse measured withi a 10 secod widow. ORDERING Please specify the followig product umbers: For the PWP*.2: For the PWP0/1/5/7.2: For thepwp2.2: Also, idicate the followig iformatio: PWIP Versio #1, 2 or 3 (See Iput: Pulse Duratio with ENC1? i Specificatios Colum) OUTPUT PRESSURE 0-15 psig or specify special calibratio up to 20 psig. G -with 0-30 psi gauge 2.21FS - 2 valve - exhausts o power failure scim supply valve, 750 scim exhaust valve - o bleed No air cosumptio - requires dowstream bleed valve -.010" bleed orifice -73 scims +/-5% valve - maitais brach pressure -750 scir supply valve, 750 scim exhaust valve -.005" bleed orifice - 14 scims +1-5% valve -.007" bleed orifice - 41 scims +/-5% All factory calibrated products are NIST traceable. Certificates of Compliace must be ordered with products

3 Pulse Width Modulated to Peumatic Output (Closed Loop) Pulse Modulated Iput to Peumatic Output with Bleed Orifice INSTALLATION DIAGRAM PWP0/1/5/7.2 INSTALLATION INSTRUCTIONS PWP0/1/5/7.2 READ THESE INSTRUCTIONS BEFORE YOU BEGIN INSTALLATION. Groud yourself before touchig board. Some compoets are static sesitive. MOUNTING Circuit board maybe mouted i ay positio. If circuit board slides out of sap track, a o-coductive stop may be required. Use oly figers to remove board from sap track. Slide out of sap track or push agaist side of sap track ad lift that side of the circuit board to remove. Do ot flex board or use tools. POWER CONNECTIONS THIS PRODUCT ACCEPTS 24 VOLTS AC OR DC POWER Be sure to follow all local ad electrical codes. Refer to wirig diagram for coectio iformatio. 1) The secodary supply voltage to the iterface should be isolated from earth groud, chassis groud, ad eutral leg of the primary widig. Ay field device coected to this trasformer must use the same commo. If you are ot sure of other field device cofiguratio, use separate trasformers. If you do ot observe this, proper operatio icludig feedback may ot fuctio

4 Pulse Width Modulated to Peumatic Output (Closed Loop) Pulse Modulated Iput to Peumatic Output with Bleed Orifice SPECIFICATIONS Peumatic Tubig Size/Type 1/4" O.D. omial polyethylee Dimesios 4.0"L x 2.175"W x 1.5"H (mouted i saptrack) Shippig Weight 7. 1 oz. - PWPO.2, 1.2, 5.2, ad 7.2 ad 9.0 oz.- PWP2.2 ad 8.9 oz. for PWP2.2FS Moutig Furished with 2.25" wide x 4.0" legth of saptrack (ENC1 Optioal) ENVIRONMENTAL REQUIREMENTS Operatig Temperature Rage 32 to 120 F Storage Temperature Rage -20 to 150 F Operatig Humidity Rage 5 to 95% o-codesig 2) If the 24 volt AC power is shared with devices that have coils such as relays, soleoids, or other iductors, each coil must have a MOV, AC Trasorb, or other spike subbig device across each of the shared coils. Without these subbers, coils produce very large voltage spikes whe de-eergizig that ca cause malfuctio or destructio of electroic circuits. 3) If the 24 volt DC power is shared with devices that have coils such as relays, soleoids, or other iductors, each coil must have a MOV, DC Trasorb, or a diode placed across the coil or iductor. The cathode or baded side of the diode (or DC Trasorb) coects to the positive side of the power supply. Do ot power without mai air supply provided. 4) You should measure the actual voltage output of the secodary. If the output is ot fully loaded you may read a higher voltage tha the circuit board ca hadle. The gauge port will accept a miiature 1/8" FNPT back-ported pressure gauge to allow direct readig of brach lie pressure. The gauge should be sealed by teflo sealig tape, ad should be just sug. A back up wrech should be used to hold the maifold. Warraty does ot iclude malfuctio due to clogged valve. Mai airport is filtered with the supplied micro itegral-i-barb filter. Periodically check the filter for cotamiatio ad flow reductio, ad clea with a brush or replace if eeded (Part # PNO04). The surface betwee the maifold ad pressure trasducer is a pressure seal. Do NOT stress the circuit board or allow the maifold to move. Hold the maifold i oe had while istallig peumatic tubig oto the barbed fittigs ad use care whe removig tubig to avoid damagig fittigs or movig maifold. The bleed orifice ca be uscrewed with a 1/4" hex ut driver for cleaig or ispectio. Do ot lose the sealig gasket or isert aythig ito the precisio orifice. Clea by swabbig with a degreaser ad blowig clea air through the orifice from the opposite directio. The color of the hex ut idicates orifice size: brass =.007"; silver.010"; copper=.005" This uit requires at least two cubic iches of brach air lie capacity to operate without valve oscillatio, ad mai air must be miimum of 2 psig above highest desired brach output pressure. The iput sigal will ot cause wrap aroud or start over if the upper rage limit is exceeded

5 Pulse Width Modulated to Peumatic Output (Closed Loop) Pulse Modulated Iput to Peumatic Output with Bleed Orifice CHECKOUT SIGNAL INPUTS: Versio #1. See jumper positios, page 1. Coect the pulse iput positive (+) to the dow (DN) termial, ad commo to the sigal commo (SC) termial. Versio #2. Solidye PWM sigal ad 0-10 secod Duty Cycle Pulse of Barber Colma, Robertshaw or Staefa No pulse withi 10 secods= miimum output. Pulse equal or exceedig 10 secods= maximum output. Versio #3. For Staefa Smart II 0-20 Volt Phase Cut, 0-100% iput coect Y to DN termial, ad commo to SC (-) termial. Trigger level above approx. 5% ad below 95% of phase cut waveform (i.e. 5-95% mi./max. or 5% lower ad upper detectio deadbad). The PWPO, 1, 5, 7.2 is factory calibrated at 0 psig miimum ad 15 psig maximum output. This output ca be re-calibrated to match the pressure rage of the actuator usig the GAIN ad OFFset potetiometer as follows: (Note: The ZERO potetiometer is factory set. Do ot adjust.) 1. Settig the miimum pressure. Make sure the sigal iput is discoected. Place the OVERRIDE shut to the AUTO positio. Drive the PWPO, 1, 5, 7.2 to the miimum positio by removig the 24V power coectio for 3 secods, the re-coect. Adjust the OFFset pot to the desired pressure output, or util the actuator just starts to move. The adjustmet rage of the OFFset pot is 0-10 psig. 2. Settig the maximum pressure. Now place the OVERRIDE shut to the MAN positio. Tur the OVERRIDE pot to produce the maximum brach lie pressure available. Tur the GAIN pot for the maximum desired output pressure, or util the actuator just stops. The rage of the GAIN pot is 10.5 to 20.0 psig. Note: Be sure the MAIN air pressure is at least 2 psig greater tha the desired maximum brach output pressure. 3. Repeat. Because the OFFset ad GAIN pots are slightly iteractive, steps 1 ad 2 must be repeated util the desired miimum ad maximum pressures are repeatable. Sice the OVERRIDE pot is set for maximum pressure, it is oly required that you move the maual override jumper shut back ad forth from MAN to AUTO whe repeatig steps 1 ad 2. Calibratio is usually accomplished i less tha 3 iteratios. Now, select oe of the four iput timig rages with the shut as show i Figure A. Without power, the status LED will ot be illumiated. Apply power ad the STATUS LED will blik slowly (twice per secod), ad the PWPO, 1 5,7.2 will be at the lowest sigal iput state, or 0 psig. Apply miimum ad maximum iput sigals ad measure the re

6 Pulse Width Modulated to Peumatic Output (Closed Loop) Pulse Modulated Iput to Peumatic Output with Bleed Orifice SPECIFICATIONS Power Supply Voltage 24 VDC (+/- 10%) Air Supply 24 VAC (22 V mi, 28 V max-) Maximum 25 psig, miimum 20 mai air supply Supply Curret 150mA 0-15 psig output, 0-20 output optioal Feedback Sigal Output Factory Calibrated 0-5 VDC = 0-15 psig or 0-5 VDC= 0-20 psig optioal spose. Versio #11: The STATUS LED will flash quickly whe the PWPO, 1, 5, 7.2 is receivig a iput pulse, at the rate of the miimum resolutio of the selected pulse rage, ( i.e..1 to 25.5 secod rage, the LED will flash.1 secod o,.1 secod off). Exceptio:.59 to 2.93s rage - LED remais costat. Versio #2 & 3: secods - 1 flash, the pause secod Duty Cycle - 3 flashes, the pause. Staefa Phase Cut - 2 flashes, the pause. The iput sigal will NOT cause wrap aroud or start over if the upper rage limit is exceeded. The peumatic output chages whe the iput pulse has bee completed. Pressure output betwee the miimum ad maximum values will be liear, therefore software algorithms should be easy to derive. The feedback sigal rage o all selectios is 0 to 5 vdc ad is proportioal to the output pressure rage (Factory calibrated 0-15 psig ). The PWP1, 5, 7.2 are a costat bleed cotroller ad utilize a precisio orifice to maitai a measured flow of air across the valve. The PWPO.2 does ot have a bleed orifice ad depeds o a dowstream peumatic brach bleed of 14 to 73 scim. Use the PWPO.2 oly whe the dowstream peumatic system compoets cotiually exhaust air. For proper operatio, combied exhaust air flow (PWP orifice loss ad brach system loss) must be betwee 14 ad 73 scim. To use the maual override, place the AUTO/MAN jumper shut i the MAN positio. Usig a small bladed screwdriver, tur the top adjust pot to icrease or decrease the peumatic output. Retur AUTO/MAN to AUTO positio whe fiished

7 Pulse Width Modulated to Peumatic Output (Closed Loop) Pulse Width Modulated Iput to Pressure Output Stadard ad Fail Safe INSTALLATION DIAGRAM PWP2.2 INSTALLATION INSTRUCTIONS PWP2.2 READ THESE INSTRUCTIONS BEFORE YOU BEGIN INSTALLATION. Groud yourself before touchig board. Some compoets are static sesitive. MOUNTING Circuit board may be mouted i ay positio. If circuit board slides out of sap track, a ocoductive stop may be required. Use oly figers to remove board from sap track. Slide out of sap track or push agaist side of sap track. NOTE: Lift that side of the circuit board to remove. Do ot flex board or use tools

8 Pulse Width Modulated to Peumatic Output (Closed Loop) Pulse Width Modulated Iput to Pressure Output Stadard ad Fail Safe SPECIFICATIONS Power Supply Voltage 24 VDC (+/- 10%) Air Supply Maximum 25 psig, miimum 20 mai air supply 24 VAC (22 V mi., 28 V max.) at 0-15 psig output pressure rage or specify PWP2.2 termials special calibratio Supply Curret 160 ma max. (200 ma max. FS model) Air 20 psig mai/1 5 psig out, Supply Feedback Sigal Output Factory Calibrated 0-5 VDC = 0-15 psig valve 750 scim, Exhaust rate: PWP or specify special calibratio scim, PWP2.2FS scim POWER CONNECTIONS THIS PRODUCT ACCEPTS 24 VOLTS AC OR DC POWER Be sure to follow all local ad electrical codes. Refer to wirig diagram for coectio iformatio. 1) The secodary supply voltage to the iterface should be isolated from earth groud, chassis groud, ad eutral leg of the primary widig. Ay field device coected to this trasformer must use the same commo. Groudig should be to the system commo oly. If you are ot sure of other field device cofiguratio, use separate trasformers. If you do ot observe this, proper operatio of the PWP icludig feedback may ot fuctio 2) If the 24 volt AC power is shared with devices that have coils such as relays, soleoids, or other iductors, each coil must have a MOV, AC Trasorb, or other spike subbig device across each of the shared coils. Without these subbers, coils produce very large voltage spikes whe de-eergizig that ca cause malfuctio or destructio of electroic circuits. 3) If the 24 volt DC power is shared with devices that have coils such as relays, soleoids, or other iductors, each coil must have a MOV, DC Trasorb, or a diode placed across the coil or iductor. The cathode or baded side of the diode (or DC Trasorb) coects to the positive side of the power supply. Do ot power without mai air suppy provided. 4) You should measure the actual voltage output of the secodary. If the output is ot fully loaded you may read a higher voltage tha the circuit board ca hadle. The gauge port will accept a miiature 1/ 8" FNPT back-ported pressure gauge to allow direct readig of brach lie pressure. The gauge should be sealed by teflo sealig tape, ad should be just sug. A backup wrech should be used to hold the maifold. Warraty does ot iclude malfuctio due to clogged valve. Mai airport is filtered with the supplied micro itegral-i-barb filter. Periodically check the filter for cotamiatio ad flow reductio, ad clea with a brush or replace if eeded (Part # PNO04). The surface betwee the maifold ad pressure trasducer is a pressure seal. Do NOT stress the circuit board or allow the maifold to move. Hold the maifold i oe had while istallig peumatic tubig oto the barbed fittigs ad use care whe removig tubig to avoid damagig fittigs or movig maifold. GAUGE POSI- TION ADJUSTMENT. If istallatio requires adjustmet of the gauge for proper readig of the face, tur the gauge couter clockwise. 0 rigs i the bottom of the gauge port will allow this without leakage. This uit requires at least two cubic iches of brach air lie

9 Pulse Width Modulated to Peumatic Output (Closed Loop) Pulse Width Modulated Iput to Pressure Output Stadard ad Fail Safe capacity to operate without valve oscillatio, ad mai air must be miimum of 2 psig above highest desired brach output pressure. The iput sigal will ot cause wrap aroud or start over if the upper rage limit is exceeded. CHECKOUT SIGNAL INPUTS: Versio #1. See jumper positios, page 1. Coect the pulse iput positive (+) to the dow (DN) termial, ad commo to the sigal commo (SC) termial. Versio #2. Solidye PWM sigal ad 0-10 secod Duty Cycle Pulse of Barber Colma, Robertshaw or Staefa. No pulse withi 10 secods= miimum output. Pulseequal or exceedig 10 secods= maximum output. Versio#3. For Staefa SmartII 0-20 Volt Phase Cut, 0-100% iput coect Y to DN termial, ad commo to SC (-) termial. Trigger level above approx. 5% ad below 95% of phase cut waveform (i.e. 5-95% mi./max. or 5% lower ad upper detectio deadbad). The PWP2.2 is factory calibrated at 0 psig miimum ad 15 psig maximum output. This output ca be re-calibrated to match the pressure rage of the actuator usig the GAIN ad OFFset potetiometer as follows: (Note: The ZERO potetiometer is factory set. Do ot adjust.). 1. Settig the miimum pressure. Make sure the sigal iput is discoected. Place the OVERRIDE shut to the AUTO positio. Drive the PWP2.2 to the miimum positio by removig the 24V power coectio for 3 secods, the re-coect. Adjust the OFFset pot to the desired pressure output, or util the actuator just starts to move. The adjustmet rage of the OFFset pot is 0-10 psig. 2. Settig the maximum pressure. Now place the OVERRIDE shut to the MAN positio. Tur the MANual pot to produce the maximum brach lie pressure available. Tur the GAIN pot for the maximum desired output pressure, or util the actuator just stops. The rage of the GAIN pot is 10.5 to 20.0 psig. Note: Be sure the MAIN air pressure is at least 2 psig greater tha the desired maximum brach output pressure. 3. Repeat. Because the OFFset ad GAIN pots are slightly iteractive, steps 1 ad 2 must be repeated util the desired miimum ad maximum pressures are repeatable. Sice the OVERRIDE pot is set for maximum pressure, it is oly required that you move the maual override jumper shut back ad forth from MAN to AUTO whe repeatig steps 1 ad 2. Calibratio is usually accomplished i less tha 3 iteratios. Now, select oe of the four iput timig rages with the shut as show i Figure A

10 Pulse Width Modulated to Peumatic Output (Closed Loop) Pulse Width Modulated Iput to Pressure Output Stadard ad Fail Safe Without power, the status LED will ot be illumiated. Apply power ad the STATUS LED will blik slowly (twice per secod), ad the PWP2.2 will be at the lowest sigal iput state, or 0 psig. Apply miimum ad maximum iput sigals ad measure the respose. Versio #1 Operatio: STATUS LED will flash quickly whe PWP2.2 is receivig a iput pulse, at the rate of the miimum resolutio of the selected pulse rage, ( i.e.. 1 to 25.5 secod rage, the LED will flash. 1 secod o,.1 secod off). Exceptio:.59 to 2.935s rage - LED remais costat. Versio #2 & 3 Operatio: secods - 1 flash, the pause. Staefa Phase Cut-2 flashes, the pause secod dutycycle - 3 flashes, the pause. The iput sigal will NOT cause wrap aroud or start over if the upper rage limit is exceeded. The peumatic output chages whe the iput pulse has bee completed. Pressure output betwee the miimum ad maximum values will be liear, therefore software algorithms should be easy to derive. The feedback sigal rage o all selectios is 0 to 5 VDC ad is proportioal to the output pressure rage (Factory calibrated 0-15 psig ). The PWP2.2 icorporates two valves ad is ot a costat bleed cotroller. Its brach exhaust flow ad respose time is ot limited by a iteral restrictor ad is similar to its load rate. If power is lost, the PWP2.2 will ot exhaust ay air from the brach lie. The PWP2.2 is ideal for log brach lie rus, multiple actuators, ad outside air dampers because of its 750 scir capacity. The FAIL SAFE model, PWP2.2FS, will exhaust its brach lie pressure to 0 psig o a power failure. Maual override: Place the AUTO/MAN jumper i the MAN positio. Usig a small bladed screwdriver, icrease or decrease the peumatic output. Retur AUTO/MAN to AUTO positio whe fiished